@media only screen and (max-width: 992px) {
		#main_1{
		height: auto;
		padding-bottom: 75px;
	}
	.right_content {
		display: flex;
		flex-direction: column;
		flex-wrap: wrap;
		justify-content: space-between;
		padding: 0;
		background: #fff;
		height: auto;
	}
	.right_content_content {
		text-indent: 0;
		margin: 0;
		padding: 0;
		width: 100%;
	}
	.listvideo {
		position: relative;
	}
	.listvideo img:nth-child(1) {
		margin: 0;
		width: 100%;
	}
	.listvideo img:nth-child(2) {
		display: none;
		height: 30%;
		position: absolute;
		top: 50%;
		left: 50%;
		transform: translate(-50%, -50%);
	}
	.listvideo:hover>img:nth-child(2) {
		display: block;
	}
	.listvideotext {
		margin-top: 10px;
		font-size: 15px;
		line-height: 20px;
		height: 40px;
		overflow: hidden;
		color: rgb(52, 29, 85);
	}
	.listvideotext>a {
		color: rgb(52, 29, 85);
	}
}

@media (min-width: 992px) {
	#main_1{
		height: 1000px
	}
	.right_content {
		display: flex;
		flex-direction: row;
		flex-wrap: wrap;
		justify-content: space-between;
		padding: 0;
		background: #fff;
		height:900px;
	}
	.right_content_content {
		text-indent: 0;
		margin: 0;
		padding: 0;
		width: 30%;
	}
	.listvideo {
		position: relative;
	}
	.listvideo img:nth-child(1) {
		margin: 0;
		width: 100%;
	}
	.listvideo img:nth-child(2) {
		display: none;
		height: 30%;
		position: absolute;
		top: 50%;
		left: 50%;
		transform: translate(-50%, -50%);
	}
	.listvideo:hover>img:nth-child(2) {
		display: block;
	}
	.listvideotext {
		margin-top: 10px;
		font-size: 15px;
		line-height: 20px;
		height: 40px;
		overflow: hidden;
		color: rgb(52, 29, 85);
	}
	.listvideotext>a {
		color: rgb(52, 29, 85);
	}
}